Hub-brake.



A. CARLSON.

HUB BRAKE.

APPLICATION FILED JULY zo, 1911.

Patented Mar. 19, 1912.

UNITED STATES PATENT. OFFICE.

ALBERT CARLSON, OF PRESTON, WASHINGTON.

HUB-BRAKE.

To all 'whom t may concern:

Be it known that I, ALBERT CARLSON, a citizen of the United States,residing at Preston, in the county of King and State of W'ashington,have invented new and u seful Improvements in Hub-Brakes, of which thefollowing is a specification.

The invention relates to brakes, and more particularly to the class ofhub brakes for bicycles, tricycles, or other velocipedes.

The primary object of the invention 'is the provision of a brake inwhich a velocipede, such as a bicycle or tricycle, may be brought to astandstill, the brake being concealed within the hub of the front wheelof the said velocipede, and is readily and easily operated by the riderof the machine.

Another object of the invention is the provision of a brake which issimple in construction, powerful and positive 1n operation, and also onethat may be manufactured at a minimum cost.

Other objects will be in part obvious, and in part pointed outhereinafter.

The invention accordingly consists in the features of construction,combination of elements, and arrangement of parts, which will beexemplified in the construction hereinafter set forth, and the scope ofthe application of which will be indicated in the following claims.

In the drawings: Figure 1 is a fragmentary side elevation of the frontfork of a bicycle, showing a portion of the front wheel, and its hub,with the brake constructed in accordance with the invention mountedtherein. Fig. 2 is a vertical longitudinal sectional view through thehub and brake mechanism, the latter being in normally released position.Fig. 3 is a similar view, showing the brake applied.

Similar reference characters indicate corresponding parts throughout theseveral views of the drawings.

Referring to the drawings by numerals, 5 designates portions of thelimbs of the front fork of a bicycle, in which is mounted a front axle6, upon which is adapted to be mounted the hub shell 7 of the frontwheel of the bicycle, only a portion of the latter being shown, as it isof the ordinary wellknown construction. The axle 6 is formed withthreaded portions 8 and 9, respectively, with which are engaged theusual lock nuts 10 for the securing of the said axle in the limbs of thefork,

Specification of Letters Patent.

Application led July 29, 1911.

Patented Mar. 19, 1912.

Serial No. 641,260.

Adjustably engaged upon the threaded portion S of the axle 6 anddisposed within the hub 7 is a guide sleeve 11, the same being formedwith an outer ratchet face 12 engaging a similar ratchet face 13 formedon a holding arm 14, the same being connected to a clamping collar 15,which is engaged about the limb 5 adjacent thereto of the front fork,and in this manner the sleeve 11 will be held stationary and againstrotation upon the axle 6, the arm 14 being disposed between the sleeveand the said limb 5, adjacent thereto, of the front fork.

Surrounding the axle 6 and adapted for longitudinal movement thereon isa wedg' ing cone 16, the same being formed at one end with a socket 17,in which telescopes the sleeve 11, the latter being provided with aguide key engaging in a guide groove 19 formed in the wall of the socket17 in the cone 16, the outer surface of the latter being adapted forfrictional engagement with the wall of a conical-shaped bore 2Ointeriorly of the hub shell 7 for locking the hub against rotation uponthe axle 6, in a manner presently described.

Upon the axle 6 is loosely mounted a turning or actuating sleeve 21, thesame being formed with a threaded end 21lll engaging in companionthreads 21b provided in a suitable socket formed in the cone 16, at itsend adjacent to said sleeve, the threaded end of the sleeve telescopingwithin the socket within the cone end. The sleeve 21 is formed with adownwardly and rearwardly curved operating arm 22, to which is pivotallyconnected a manually operated brake pull rod 23. Thus, it will be seenthat upon turning the sleeve 21 in one direction the cone 16 will bebrought into wedging engagement with the wall of the conical boro 20 inthe hub for locking engagement therewith, and upon turning the sleeve 21in the reverse direct-ion, the said cone 16 will be disengaged from thewall of the conical bore 20, thereby freeing the hub for rotation uponthe axle, the hub 7 and the turning sleeve 21 being provided withannular, bearing ball seats 24, in which are disposed the usual bearingballs 25. Removably threaded in the end of the hub 7, opposite the endin which the sleeve is mounted, is a ball retaining casing 26, thestationary sleeve 11 being provided with an annular ball seat 27, andlikewise the casing 26 is provided with a ball seat 28, in which isarranged a series of bearing balls 29, the casing 26 being held fastwithin t-he hub 7 by means of set screws 30, so as to prevent anypossibility of displacement thereof.

Formed in the outer end of the turning sleeve 21 is a ball cavity 31, inwhich is arranged a series of bearing balls 32, the same being heldtherein by means of a ball retaining collar 33 adjustably engaged on thethreaded end 9 of the axle 6. Thus, it will be seen that friction willbe minimized upon the turning of the sleeve 2l for the break-- ing ofthe hub 7.

What is claimed is:

l. The combination with an axle, of a hub rotatable thereon and having aconical bore, a guide sleeve threaded on one end of the axle, a wedgingcone within the hub and slidably connected with the guide sleeve forengagement in the bore in the hub, and a turning sleeve loose on theaxle and having threaded connection with the wedging cone for engagingthe same with and disengaging it from the wall of the conical bore inthe hub.

2. The combination with an axle, of a hub rotatable thereon and having aconical bore, a guide sleeve threaded on one end of the axle, a wedgingcone within the hub and slidably connected with the guide sleeve forengagement in the bore in the hub, a turning sleeve loose on the axleand having threaded connection with the wedging cone for engaging thesame with and disengag` ing it from the wall of the conical bore in thehuh, and means for holding the guide sleeve against rotation on theaxle.

3. The combination with an axle, of a hub rotatable thereon and having aconical bore, a guide sleeve threaded on one end of the axle, a wedgingcone within the hub and slidably connected with the guide sleeve forengagement in the bore in the hub, a turning sleeve loose on the axleand having threaded connection with the wedging cone for engaging thesame with and disengaging it from the wall of the conical bore in thehub, means for holding the guide sleeve against rotation on the axle,and bearings interposed between the hub and said sleeves.

4. The combination with an axle, of a hub rotatable thereon and having aconical bore, a guide sleeve threaded on one end of the axle, a wedgingcone within the hub and slidably connected with the guide sleeve forengagement in the bore in the hub, a turning sleeve loose on the axleand having threaded connection with the wedging cone for engaging thesame with and disengaging it from the wall of the conical bore in thehub, means for holding the guide sleeve against rotation on the axle,bearings interposed between the hub and said sleeves, and manuallycontrolled means operating the turning sleeve.

5. The combination with the front axle of a velocipede, of a hubrotatable thereon and having a conical bore, a guide sleeve t-hreaded onone end of the axle, a wedging cone within the hub and slidablyconnected with the guide sleeve for engagement in the bore in the hub, aturning sleeve loose on the axle and having threaded connection with thewedging cone for engaging the same with and disengaging it from the wallof the conical bore in the hub, means for holding the guide sleeveagainst rotation on the axle, bearings interposed between the hub andsaid sleeves, manually controlled means operating the turning sleeve,and means locking the axle fixed in t-he front fork of such velocipede.

In testimony whereof I aflix my signature in presence of two witnesses.

ALBERT CARLSON. lVitnesses:

N. R. HARSHMAN, L. V. HOWELL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

